Cotton-gin.



s. 1). MURRAY.

COTTON GIN.

- APPLICATION FILED DEC 4,1905. I I 991,876. I Patented May 9, 1911.

2 @EEETB-BKBET 1.

JT'Z'iaes-ses:

S. D. MURRAY.

' COTTON GIN.

APPLIOATION FILED DEO.4,1905.

991,876. Patented May 9, 1911.-

2 BKEETS-SHEET 2.

s'r'mPnEN n. MURRAY, OF nALLAsjrmxns.

OOTT ON-GIN.

Specification of Letters Patent.

Applioatlon filed December 4, 19054 Patented Mayl), Serial No. 290,055.

To all whom it may. com-cw:

Be it known that l, STEPHEN l). hllURRAY, aiitizon of the United States, and a rosideiitt of the city of Dallas, county of Dallas, and State of Texas, have invented a new and useful ln'iprovement in Cotton-Gills, of which the following is a. specification.

This invention relates to cotton gins and especially to brush cylinders for cotton gins.

It has for its principal objects to produce a metallic brush cylinder to 1n'oduce u brush cylinder that will not get, out of balance in use; to produce a, brush cylinder having a stable balance and not suhJect to get out of balance by the varying conditions of the atmosphere; to produce it brush cylinder all diametrically opposite portions of which are synunetrical with relation to the axis of the brush cylinder and are of equal density; to produce a brush cylinder having fixer? to in. pe'ri hery brush-retaining channels adapted. to a low of adjust-moot. removal or replacement of the individual brushing members; to produce a brush cylinder adapted to the ready renewal of the individual brushes without removing the brush from the gin and Without.- disturbing the running balance of the brush, also without, undoing any fustening member or taking apart any portion of the cylinder other than the rmnovnl and re. lHCKElIli-Tllh of the hrushin members and Without injury to said members or any por tion of the brush; to produte a hrush cylindo: in which the centrifugal notion. of any one fportion 0 brushing uuamher is opposed by an equal centrifugal action or pull of other portions or brushing members to maintain perfect rotuntlity in the brusl'i cylinder; to produce a cotton gin brush cylinder having no joints or openings to permit the ingress or accumulation of dust; also to pro vule 1ndiv1dua] brushing i'nemhers of novel .constfuotion and. other objects llereinntter more fully appearing.

The cottoli'gin brush embodying the feathe crushing u'uitei'ial may be adjusted inrlor', over and along the uoutt'int;- enr-ls mtt also at equal distances around the peiipluu'y oi the (:ylimjler, slot-ted metal tuhes :ii'olsw cured, prtil'ertdJly by strips of solde fl lihe slotted lulms (:oustituti 11g in ellect stxiflenang. rihs extending loi'igit'udiijmllv over the eyl in der and giving. great rigidity to the li tter. The stability of the running hula-nee of gthe brush is also increased by the use 0 the slotted metal tubes, owing to the foot that, the centrifugal pull on the tubes nets ti? impose u tensile strain u pm] the sheet in tal cylinder. thus holding the said tylilltlfil} in true round form. The cylinder proper is without joints or creviees, and hllGI'GfOl'QjQXr. eludes tl'reentranee oil dustthercintm, on

in the tubes to bring unwoi'n-portions. t l .of opposite the and thus rnateriully prolong the practical life of the brush St-Iljlt'jtll}; as an entirety. In the drawings, Figure lis 2t transverse soctionnl view through n-cotton ginofdhe Common type etiuiiplurrjl with the .lZTI'IPTQVC l brush cylinder. Fig.2 is a view of the b jush cylinder partly in longitudinal sectiongmc partly in elevation. Fig. is o 'pe'rspe.

view of a portion of the brush cylinder show ing: the menus for holding the brushingmmt'eriail, a part. of the meanshaving the material rentfv'ed therefrom. Fig. 45,; perspective view of a portion of anindt vidual finish showing the manner of 100m StlfiClTlllfZ the same. Fig. 5 an end v w oil the cylindrical sheathing on cylinder pmne of the lin'ush vylinder showinglthe holding means for the brushing material fixedt-hereto and the hiushing'muteri'al thereinpthe shaft and bends of the cylinder theing omitted. .I The type of cotton gin 'chosen fomthe purpose of illustration comprises, a i'ollsbox 1, having. downwardly ieo'nverging-x ides formed by' a seed-board 2 and a gra-tlfall 3. A cylinder 4 loea ted' b'elowisaidi' mile all, this cylinder being of any preehed' type of sawcylinder and having itsr savvs projecting into the 'roll-box 'between th'etbars and grate-"fill, A brush-cylinder 6 is arranged beck (if/the saw-cylinder in position to brush the lint from the saws of th'e sawcylinder na mr it back ind fan it elm-u a chute '7," which may lead into a conduit} known as the delicate and limiting member of the gin. It runs at high speed and as fonnerlyconstructed has a tendency to get out of balance and it is very difficult to put it in satisfactory balance. When the well known form of gin brush gets out of balance, it is rare that the facilities or skill are at hand to do the work of rebalancing it, as

hereinbefor e indicated, and consequently .it is necessary to send the brush to some .point -where, facilities and skill can be had to rectify the irregu larity of the brush or else the latter'contlnues to operate in an unbalanced condition, greatly to the injury of the brushjand other parts of the gin. The

, latter course is the one generally followed,

because proprietors of ginneries are loath to lose'the work of the gin for even a small part of the short and busy 'nning season.

In the present cotton gin, t e element embodying the features of the invention or the brush cylinder has been particular do:

.vised toovercome the many disadvantages operative to draw the rin upon its respective hub, and thus the sha t will be clamped by the hub. The maximum diameter of the heads is equal to or a little greater than the maximum diameter of the brush cylinder length of the ,is intended to'be, measured from the outer ends of the brushes, so that the said heads will support the cylinder when the latter'is removed from the in and the brushes on brushing material W111 not be mashed by the weight of the cylindernpon the same. On the inner side of each'head, and at a dis tance from the eriphery thereof, equal to the rush or brushing material when in its holding means, and the thickness of the sheathing of the cylinder, a cylindrical flange 13 1S inte :1 1y formed or arranged. The cylindrical sheathin orcylinder proper 14 formed of suita le sheet I metal, preferably tin, has its opposite ends fitted over and supported by the said cylindricalflan s 13 of the two heads. The cylinder is he (1 in shape between the heads by-ringsv15 of which there ma be one or more, the number of rin use depending upon the length of the cy inder.

The sheathing'm is preferably made of a sin 1e sheet 0 metal, which is rolled into the prm of a cylinder, the'edges thereof abuttingto 'form a butt. joint. Ufon the exterior of the cylinder so forme brush receivingchannels 16am secured by soldering or riveting'or by anysuitable means. I I m .covering should exten These channels are preferably slitted cylindrical tubes, as shown, though they me be given different cross sections if desire One of the tubes is soldered immediately over the meeting edges of the sheet forming the sheathing, and thus the edges are secured together at the same time that the tube is secured to the cylindrical sheathing. The remainder of the tubes are equally spaced around the periphery of the cylinder and are soldered to the sheathing. The tubes are referably in contact with the sheathing t roughout their length and the solder extends from one end to the other of said tubes. In soldering the slitted tubes to the, cylinder, wires of solder of uniform diameter are used. Pieccsof such wire of even length with the tubes are fused into and along the angles 22 formed near the contact point of the tubes with the periphery of the c 'linder, one such piece of wire being ,use to each of the angles. This gives great stiffness and rigidity to the base or contact point of the tube with the cylinderwhile, at the same-time, the edges of the tube will be permitted to spring apart along the slot as may be required by the drawing in of a new tight-fitting brush. The tubes or channels 16 bein rigidly secured to the sheathing of the cylinder constitute in effect stiffening ribs and thus the brush cylinder is iven greater strength and rigidity.

.he brushes are inserted in the brush re ceiving" channels endwise. To permit-this, the heads are provided with radial notches 17 at their peripheries in line with said 'bru'sh receiving channels and having the same cross section as the brush 1t is pro.

posed to insert.

The-brushes 18 are of novel construction and have'heads fitting in the brush receiving channels. The head of each brush has a round '-core which, in the case illustrated, consists of ing throughthe'bristles. The seam is made as close to the core as possible in order to secure the bristles by the binding efiect of the covering and to 've firmness to the head, though it will. stll be liable. The canvas far enou h to brush into the c ennels.

along the bristles roject out of the brush rece ving 0 anne so that it can be grasped with nippers or liers in order to draw'the.

The brushes. are

'preferabl made the full length of the channelsin 'w ich they are intended to be used, although they may be made shorter and the channels may be filled with us many sec;,f." tions as may be desiredf-Thisbrush may chea ly and all brushesnre hen a brush becomesamaze away but may be moved along the channel until unworn portions are brought into pothe brushes are also endwise adjustable in the holding means sition opposite the saws. entirely worn out it may be withdrawn from When a brush is therefor or channels 16. By moving each bnnlsh endwise in its holding means or ,chan

nel, apart thereof, or portions thereof ,{throughout its entire length, that may have been primarily opposite the-spaces between.

the saws and unworn, may be shifted into alinement or operative relationto the sawsl and thereby prolong the practical life of the entire cylinder. with material economy in brush cylinder construction and use. When a brush is drawn into its tube or channel, it will remain securely fixed and unmoved by use in the channel, because it snugly fits the latter, and furthermore, the brush by its yielding construction will set up a practical immovable assemblage with relation to .the holding means or channel therefor. As a matter of fact, when the brush is drawn into its holding means or channel, it cannot move endwise when the brush cylinder is revolving, even though the individual brush was loosely drawn into the channel, because centrifu al force comes into play when the brush cy inder revolves, and causes the individual brush to remain securely fixed in its holding means or channel. The individual brush may, however, as above noted, be adjusted or shifted in its holding means or channel or completely withdrawn from the latter by means of nippers or other suitable instrument which is caused to grasp the brush close to the tube or channel so as to clasp or engage the projecting edges of the canvas covering on the bristles.

It will be obvious that the brush cylinder embodying the features of the invention is capableof considerable modification within the scope of the invention, 'and' therefore it is to bounderstood that the specific construction shown and described is not to be considered a. limitation of the invention to the precise forms shown.

Having thus described the invention, what is claimed as new, is: y

1. In acotton gin, a brush cylinder comprisingheads, a c lindrical sheathing mounted on said hea s, said sheathing having brush receiving channels longitudinally continuous over and projecting outwardly from its periphery and fixed thereto and having a permanent form, and brushes shiftably mounted in said channels.

2. In a cotton in, a brush cylinder havin end support-ing evices, an outer sheet meta sheathing en aging the supporting-devices and provide with brush receiving channels continuously extending thereover, and fiexi- I ble brushes mounted and solely held in the said channels by friction.

3. In a cotton gin, a brush cylinder provided with a. cylindrical sheet metal sheathing forming the outer covering therefor and having peripheral brush receiving channels continuously extendingthereover and projecting outwardly: therefrom, and brushes having anormal frictional retentive association with and removably mounted in the said channels. l

at. In acotton gin, a brush cylinder'having i an outer "imperforate sheet metal sheathing provided with brush receiving slots continu ing thereover from end to end, and brushes ffictionally held and movable in the said s ots.

5. In a cotton gin,-a. brush cylinder comprising heads and a cylindrical sheathing mountedon said heads, said sheathing having continuous peripheral brush receiving channels, and brushes adjustably mounted therein.

6. In a cotton gin, a brush cylinder having a continuous sheathing of sheet metal pro vided with fixed peripheral brush receiving channels continuing thereover, and brushes mounted in the said channels subsequent to the association of the latter with the sheathin and frictionally held in said. channels.

I. In a cotton gin, a brush cylinder having continuous brush receiving channels extending longitudinally thereover, and brushes longitudinally shiftable in the said channels.

8. In a cotton gin, a brush cylinder having brush receiving tubes secured to its periphcry, said tubes having longitudinal slits in their outer portions, and brushes having yielding body portions mounted in and frictionally engaging the tubes, the brush mate rial radially projecting through the slits of the tubes.

9. In a cotton gin, a brush cylinder comprising a sheet .etal sheathing, longitudinally slitted metal riphery of said s eathing, andbrushes adjustably mounted .in the tubes.

10. In a cotton gin, a brush cy inder comprising a cylindrical sheathing, a plurality of brush receiving members mountedupon the exterior of said sheathin and having lon itudinal channels with a Xed contour, an brushes endwise insertible in and freel removable from the channels and also ad justable in the latter.

11'. In a cotton gin, a brush cylinder comtubes soldered to the peprising a cylindrical sheathing, a plurality it o.

prising heads, a c lindrical sheathing con nected to the hea s, and brushes mounted upon the exterior of said sheathing, the said heads extending radially, substantially to the outer free terminals of said brushes.

13. In a cotton gin, a brush cylinder comprising heads havin cylindrical flanges on their inner faces at istances inwardly from the peripheries of the heads, a cylindrical sheathing engaging said flanges, and brushes mounted on the sand sheathing and movable through the portions of the heads projecting outwardly beyond the sheathing and protected against crushing by said outwardly projecting head portions.

1%}. In a cotton gin, a brush cylinder comprising heads, a cylindrical sheathing connected to said heads, brush receiving members mounted ugon and continuous longitudinally over sai sheathing and brushes insertible in and freely withdrawable from said members by longitudinal movement, the

heads extending radially beyond the members and having notches arranged to admit brushes to the member s.

15. In acotton gin, a brush cylinder having brush holding means extending contin uously thereove and a lurality of brushes frictionally he'i 'm and mounted in said brush holding means and longitudinally ad justable in the lattenand also applicable and removable at one of the ends of the cylinder.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses this 29thday of November, 1905. v

' STEPHEN D. MURRAY.

Witnesses:

E. E. MGLEMORE,

LEM BRALEY. 

